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GroMoPo Metadata for South Portugal coastal groundwater model

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Created: Feb 08, 2023 at 3:02 a.m.
Last updated: Feb 08, 2023 at 3:03 a.m.
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Troia-Melides is a sandy area on SW Portugal, between Lisbon and Algarve, on the Atlantic Portuguese coast. The top north of the tract is a sandy peninsula about 10 kin long and 2 to 4 kin large, and is represented by recent dynamic sand-dune systems (Plio-Plistocene-Halocene) that extends south to the rocky Sines Cape, in a total-extension of 65 km (far beyond the zone covered by this work, that corresponds to northern half of this extension). The central zone of the littoral arch has sandstone cliffs headed by ancient dunes separated from the actual beach, which is continuous along the tract. A great diversity of important ecosystems characterises all the area, conferring it an enormous ecological fragility. Besides the dune and cliffs systems, 3 important coastal lagoons are also present. This diversity. of coastal environments was responsible for the definition of protected areas, classified according the more important species (birds, rare plants). Concerning flora, 45 families belonging to 246 different species where identified in a recent study. The major percentage occupies the inner dunes and includes several priority species (Directive 92/43/CEE) - Lonopsidium acaule, Thymus camphoratus, Linaria ficalhoana, etc. A scarce variety occurs in primary and embryonic dunes (being Ammophila arenaria the most common). This area has a great touristic potential, which is not always in conciliation with its fragile ecology. However, it's a relatively well-preserved tract and is nowadays under strict land management rules. In the study area, 3 touristic areas are approved, with a total number of 39,300 touristic beds, distributed by hotels and vacation houses. As a result, some delicate situations have occurred in natural ecosystems, namely aquifer exploitation, without regarding its recharge capacity, which lead to the infiltration of saline water in the aquifers of the littoral areas. With this work it was possible to understand the role of the saltwater intrusion due to the raise of buildings and fresh groundwater demands, and the previsible impacts on coastal ecosystems. Some procedures were undertaken in order to know the hydrogeochemistry and hydrodynamical characteristics of the aquifers in the area, namely defining the thickness of the fresh groundwater and the position of the interface with the saline water on the coastal area

Subject Keywords



Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
North Latitude
East Longitude
South Latitude
West Longitude


Additional Metadata

Name Value
DOI 10.1007/1-4020-4738-X_22
Depth 60
Scale 101 - 1 000 km²
Purpose Salt water intrusion
GroMoPo_ID 149
IsVerified True
Model Code Feflow
Model Link
Model Time SS
Model Year 2006
Model Authors J. Condença, M. Oliveira Da Silva, I. Pinheiro
Model Country Portugal
Data Available Report/paper only
Developer Email
Dominant Geology Unconsolidated sediments
Developer Country Portugal
Publication Title Groundwater modelling in Atlantic coastal ecosystems (South Portugal)
Original Developer No
Additional Information
Integration or Coupling Surface water;Water management
Evaluation or Calibration Dynamic water levels
Geologic Data Availability

How to Cite

GroMoPo, E. Leijnse (2023). GroMoPo Metadata for South Portugal coastal groundwater model, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY.


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